CVE-2018-1000200 (GCVE-0-2018-1000200)

Vulnerability from cvelistv5 – Published: 2018-06-05 13:00 – Updated: 2024-08-05 12:40
VLAI?
Summary
The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
https://usn.ubuntu.com/3752-2/ vendor-advisoryx_refsource_UBUNTU
https://git.kernel.org/pub/scm/linux/kernel/git/t… x_refsource_CONFIRM
https://usn.ubuntu.com/3752-3/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/security/cve/cve-2018-1000200 x_refsource_CONFIRM
https://marc.info/?l=linux-kernel&m=152460926619256 mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/104397 vdb-entryx_refsource_BID
https://marc.info/?l=linux-kernel&m=152400522806945 mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3752-1/ vendor-advisoryx_refsource_UBUNTU
http://seclists.org/oss-sec/2018/q2/67 mailing-listx_refsource_MLIST
Show details on NVD website
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    "nvd": "{\"cve\":{\"id\":\"CVE-2018-1000200\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2018-06-05T13:29:00.297\",\"lastModified\":\"2024-11-21T03:39:55.233\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process\u0027s final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper\u0027s unmap_page_range() since the vma\u0027s VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).\"},{\"lang\":\"es\",\"value\":\"Las versiones 4.14, 4.15 y 4.16 del kernel de Linux tienen una desreferencia de puntero NULL que puede resultar en agotamiento de memoria (OOM), cerrando grandes procesos bloqueados. El problema surge del hilo final de un proceso finalizado por un OOM que llama a exit_mmap(), el cual llama a munlock_vma_pages_all() para mlocked vmas. Esto puede ocurrir en sincron\u00eda con el rango unmap_page_range() del oom reaper ya que el bit VM_LOCKED del vma se borra antes del munlocking (para determinar si otros vmas comparten la memoria y son bloqueados).\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:N/A:C\",\"baseScore\":4.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.14:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D31DCD50-805F-4CC6-9A98-2AC8BC224DF6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.15:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"380E55F5-238D-4FBB-8DB1-DB10EFC37CD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:4.16:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A63F7D1D-EB47-48AE-B89E-E84A63579FA6\"}]}]}],\"references\":[{\"url\":\"http://seclists.org/oss-sec/2018/q2/67\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/104397\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2018:2948\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/security/cve/cve-2018-1000200\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mitigation\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://marc.info/?l=linux-kernel\u0026m=152400522806945\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://marc.info/?l=linux-kernel\u0026m=152460926619256\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3752-1/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/3752-2/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://usn.ubuntu.com/3752-3/\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://seclists.org/oss-sec/2018/q2/67\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/104397\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2018:2948\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/security/cve/cve-2018-1000200\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mitigation\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://marc.info/?l=linux-kernel\u0026m=152400522806945\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://marc.info/?l=linux-kernel\u0026m=152460926619256\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/3752-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3752-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3752-3/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.